PHP array_intersect() Function
Example
Compare the values of two arrays, and return the matches:
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"green","g"=>"blue");
$result=array_intersect($a1,$a2);
print_r($result);
?>
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Definition and Usage
The array_intersect() function compares the values of two (or more) arrays, and returns the matches.
This function compares the values of two or more arrays, and return an array that contains the entries from array1 that are present in array2, array3, etc.
Syntax
array_intersect(array1,array2,array3...);
| Parameter | Description |
|---|---|
| array1 | Required. The array to compare from |
| array2 | Required. An array to compare against |
| array3,... | Optional. More arrays to compare against |
Technical Details
| Return Value: | Returns an array containing the entries from array1 that are present in all of the other arrays |
|---|---|
| PHP Version: | 4.0.1+ |
More Examples
Example 1
Compare the values of three arrays, and return the matches:
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$a2=array("e"=>"red","f"=>"black","g"=>"purple");
$a3=array("a"=>"red","b"=>"black","h"=>"yellow");
$result=array_intersect($a1,$a2,$a3);
print_r($result);
?>
Run example »
❮ PHP Array Reference
